SDLXLIFF (Trados)
SDLXLIFF is Trados Studio’s proprietary variant of XLIFF 1.2. It contains the same core structure as standard XLIFF but adds SDL-specific namespaces and metadata.
File extensions
.sdlxliff
Key differences from standard XLIFF
| Feature | Standard XLIFF | SDLXLIFF |
|---|---|---|
| Source text | <source> | <seg-source> (preferred) or <source> |
| Inline formatting | <bpt> / <ept> | <g> tags wrapping content |
| Placeholders | <ph>, <x/> | <x/> with SDL-specific attributes |
| Segment IDs | Sequential numbers | UUIDs |
| Confirmation status | Not standard | <sdl:seg-defs> with confirmation levels |
What is parsed
- Source text from
<seg-source>(falls back to<source>if not present) - Target text from
<target> - Inline tags:
<g>(formatting groups),<x/>(standalone placeholders) - Source and target language
- Empty/structural trans-units are skipped